[StanT]

There's a gap in my rack where Yggy belongs, cables are run and Yggy has it's own special outlet on my UPS.
 

8:10 am

On FedEx vehicle for delivery

HENDERSON, CO

 
 
It's been 20 min, where's my Schiit?
 

 

[Misterrogers]

Heh. Mines on a truck for delivery to Greenwood Village. I wonder how many Yggy's are being delivered in the Denver area today?

 

[freddy1201]

 
Hmm. Do you get the same distortion outputting to another DAC? If not, it may be your Yggy.

Nothing from modi, i changed every wire and i tried an other headphone and computer. Anyways, schiit has been very kind with me for solving the problem, i have no problem right now, but this problem is weird.

 

[StanT]

And 1 last min question ...   USB 2 or 3?
 
I have both on my Asrock MB, my NAD has run flawlessly on USB 2 and I'm inclined to stick with success unless there is an advantage to running usb 3.

 

[maeveth]

  And 1 last min question ...   USB 2 or 3?
 
I have both on my Asrock MB, my NAD has run flawlessly on USB 2 and I'm inclined to stick with success unless there is an advantage to running usb 3.

The Yggdrasil runs at USB 2.0 speed.  

 

[DACLadder]

  There's a gap in my rack where Yggy belongs, cables are run and Yggy has it's own special outlet on my UPS.
 

8:10 am

On FedEx vehicle for delivery

HENDERSON, CO

 
 
It's been 20 min, where's my Schiit?
 

I could hardly sleep last night after reading some 160hr+ remarks.  My Yggy finally made it to the local FedEx office after being MIA since yesterday afternoon.  Time to light it up and let the clock start.
 

7:03 am

At local FedEx facility

SUNNYVALE, CA

 

[eddypoon]

  Well, if the Yggy's output transistors are operating in Class A (and they should be), wouldn't it be hotter without a signal?

I am so confused.  Where can I find  "class x" applies to non-amplifiers? sitty FAQ? ..........   please....   

 

[DACLadder]

 
I am so confused.  Where can I find  "class x" applies to non-amplifiers? sitty FAQ? ..........   please....   

The line output drivers in the Yggy are indeed amplifiers.  But unlike power amps driving speakers they drive lighter loads that are considered high impedance.  Power difference whether a load is connected or is not is probably measured in mW or uW.  So the line driver temperature would only increase by a small fraction with a load connected.

 

[Eee Pee]

I bet Mike wishes he didn't put a power switch on this thing. His old Thetas don't have them. On all the time.

 

[Xcalibur255]

  Oh, snap, Bonnie Raitt never sounded so good....right in the middle of "thing called love" I realized I was hearing more layers than ever before.

If there is a recording of "I Can't Make You Love Me" in existence somewhere that isn't horribly mastered then I would love to find it.

 

[lojay]

I am no electrical engineer but for the sake of probing into the question, my hypothesis is that, the issue with R2R it seems is that resistance varies with temperature and thus accuracy of the getting the signal done right in multi bit DACs. S-D designs get around that problem with real life performance of resistors but introduce other problems of their own. The engineering issue is therefore not to get the DAC sufficiently hot (eg the suggestion that you could just heat the thing with a heater) but to achieve thermal stability, ie to get the Yggy at the same temperature constantly, which may require a longer power on period. So while the Yggy doesn't sound bad at all shortly after startup, to achieve its best sound it may require days to stabilise the temperature of the components.

The question I have is therefore is whether one needs days of warm up to achieve thermal stability?

 

[Pirakaphile]

I am no electrical engineer but for the sake of probing into the question, my hypothesis is that, the issue with R2R it seems is that resistance varies with temperature and thus accuracy of the getting the signal done right in multi bit DACs. S-D designs get around that problem with real life performance of resistors but introduce other problems of their own. The engineering issue is therefore not to get the DAC sufficiently hot (eg the suggestion that you could just heat the thing with a heater) but to achieve thermal stability, ie to get the Yggy at the same temperature constantly, which may require a longer power on period. So while the Yggy doesn't sound bad at all shortly after startup, to achieve its best sound it may require days to stabilise the temperature of the components.

The question I have is therefore is whether one needs days of warm up to achieve thermal stability?

From what people are saying, probably a couple of days for the components to get stable, and then a few more days for your brain to get used to the new sound.

 

[Wino]

Always good to follow the instructions

.
But I would bet that the keep-it-on recommendation refers to the after-burnin phase and *not* the initial burn-in itself. If you are just keeping the DAC on without signal, you are simply keeping it warm, not burnin it in. That keep-it-on advice is usually related to the fact that sensitive clocks need a few minutes/hours to warm-up/stabilize after a cold start .. tubes too .. caps maybe .. etc.

You could read lots about burnin for all sorts of components over the net .. it's *always* done with full signal through ... some go as far as building special burnin playlists with various types of music and one can buy special burnin cd-s or special cable burnin machines.

Someone please correct me if I'm wrong, but I doubt the Iggy is any different ... OTOH, never heard of days-long warmups either so there may be something to the Iggy .. but I seriously doubt that in the burnin case.
Long story short: you cannot truly burn-in an audio component without a signal, same as you cannot burn (almost) anything without a fire

Correct, burn-in is only occurring w/ a load, as stated by a few very smart people in this thread-  You need to put 'mileage' on the internal components, such as caps-
 
Keeping it on 24/7 should be done for the reasons as stated by Mike previously… as should ANY DAC...

 

[lojay]

From what people are saying, probably a couple of days for the components to get stable, and then a few more days for your brain to get used to the new sound.

Or a couple more days to find that one song that will give you the "holy schiit" moment you were looking for...

 

[joeexp]

Does the Yggy sound as good/or better then the MSB Analog??
This is the $2299 question!
 
They have been around a while now - we want comparisons…...